陪同伴侣回国出差，需要什么证明？

gelato

因为我在三年前来加拿大短登然后近期才再次回来的，所以这两年都需要待在加拿大境内才能达到五年之内住够两年的要求。

现在我老公（也是只有永久居留权）要回国出差，我看到相关规定是:

OPTION 3. Accompanying a permanent resident outside Canada

You may count each day you accompanied a permanent resident outside Canada provided that:

    * the person you accompanied is your spouse, common-law partner or parent (if you are a child under 22 years of age); and
    * he or she was employed on a full-time basis by a Canadian business or in the public service of Canada or of a province during the period you accompanied him or her.

那么就是说我可以跟他一起回国，算陪同，这样我在国内的时间也可以认定为是在加拿大居留的，对吗？

如果是这样的，那么除了老公公司出具的雇主信，我还需要什么文件来证明我是陪同的吗？
还有我们一定要坐一样的航班吗？因为时间紧迫我已经订不到同一班的机票了，这样以后延期枫叶卡的时候会不会有问题呢？

希望高人帮我解答，谢谢了！